Dna Model Project With Beads 2. prepare your other supplies. gather string and toothpicks to be used in creating the model. the string should be cut to be about 1 foot (30 cm) long, although you can make it longer or shorter based on your preferred size of dna model. [11] use 2 pieces of string that are the same length to make the double helix. Use white or black pipe cleaners or florists' wire for the backbones. building the backbone: the dna molecule has two sides or backbones. weave the pipe cleaner or florists' wire through alternating black and white pony beads to construct a length of beads at least 20 beads long (10 white and 10 black beads). repeat to construct the opposite side.
Dna Model Project With Beads Method #2: dna model using pipe cleaners. pipe cleaners or chenille craft sticks are a good alternative to licorice for making the double helix ladder. although they are technically wire, the fuzzy coating helps hold “base pairs” in place. plus, scissors easily snip them apart. pipecleaners. 2. take 24 of the balls and paint 12 green and leave 12 white. these green and white balls will make up the strands that run along the outside of your dna model, or the sugar and phosphate of your double helix. to paint half of the balls green, use a paintbrush to apply a thin layer of green, water based paint. Finish the dna keychain: end with phosphate and sugar beads. wrap the wires around the end bead. snip the wire as close to the bead as possible to avoid sharp edges. flip the top base pairs to the inside of the thicker wire. attach key ring. you can lightly twist to represent the shape of dna in the alpha helix. if you were wondering…. Step 2: the first bead. the first bead will be the colour of the sugar phosphate backbone. thread one end of the wire through the first bead, pull it through until it is in the middle of the thread. (see images below) take the other end of the wire and thread it through the bead in the opposite direction. pull ends tight.
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